package com.itheima.reggie.common;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/*
自定义元数据对象处理器
* */
@Component// 让spring框架管理这个类, 不加的话不会调用这个类
@Slf4j
public class MyMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) { // 当执行插入的时候自动填充

        log.info("公共字段自动填充[insert]");
        log.info(metaObject.toString());
        metaObject.setValue("createTime", LocalDateTime.now()); // 给createTime变量自动填充为 LocalDateTime.now()
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("createUser", BaseContext.getCurrentId());
        metaObject.setValue("updateUser", BaseContext.getCurrentId());
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("公共字段自动填充[udpate]");
        log.info(metaObject.toString());
        long id = Thread.currentThread().getId();
        log.info("线程id为: {}", id);
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("updateUser", BaseContext.getCurrentId());
    }
}
